- Overkill Tuning - Provides the biggest bang for your buck. Fixes the poor throttle response and the transmission shift pattern change makes the big vehicle feel lighter on its feet.
- E85 Flex Fuel (2015-2016) - If you have a 15-16, look at the flex fuel conversion kit offered here to allow E85 to be run, as Overkill tuning on ethanol makes a big difference in power and mid-range torque, even compared to high octane gasoline
- Intake System - The C/C trucks is one of very few platform that I support getting an aftermarket intake system right away, as the factory air filter housing is hard to modify to get more airflow to the filter. There's not a lot of "cold air"sources in the engine bay so focus on airflow volume selecting your system
- 80mm Throttle Body - With the intake system done, look at our 80mm throttle body. The 15-16 C/C intake manifold already has an 80mm inlet and the 17-19 is several mm larger than the small factory throttle body; its flow will be maximized with our throttle body upgrade, better throttle response and top end horsepower.
- JacFab Intake Manifold Spacer (2015-2016) - Not a gimmick at all! This intake manifold spacer lengthens each cylinder head intake runner length and increases overall volume, both of which add low-mid rpm torque, great for this pickup platform.
- Torque Converter Upgrade - The best way to improve torque is get the LFX revving higher and a higher stall converter gets the job done. Developed for our supercharged platforms, this converter works great for your regular C/C truck with taller tires and other mods. This mod is ambigious where it fits in your mod path, I suggest doing it anytime after an Overkill tune, as the Overkill transmission settings work hand in hand with our torque converter. Available for both 6-speed and 8-speed automatics from Tracy Lewis Performance.
- More minor mods - Exhaust work is small gains on the 3.6, you can install the mufflers you like and gain more sound than horsepower.
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 Overkill is proudly a premier tuner for the GM 3.6 V6 family of engines. I not only tune and modify but I've personally owned several 3.6 vehicles. With specialized 3.6 products available from Overkill, choose the tuning that will support them, from E85 to larger throttle bodies to forced induction! Buying a RIPP, Edelbrock or Mallet supercharger and want PROPER tuning? You're at the right place. Even if you do nothing to your C/C pickup except the tuning, you'll appreciate the Overkill improvement to how your truck performs and drives. What you'll notice:
What you'll get with your purchase:
Why get an Overkill tune versus the competition?
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HP Tuners – HP Tuners works on all model years. It requires a windows based laptop computer or tablet with USB port to interface with the vehicle inside the vehicle. You’ll use the software to read the factory tuning and upload Overkill tuning, along with take driving scans. Overkill tuning can support all our modifications including the supercharger systems and including 2017+ transmission support through HP Tuners.
EFI Live Autocal – Autocal works on all model years. You’ll need a windows based personal computer with usb port to transfer files to and from the Autocal however the Autocal works autonomously within the vehicle so you don’t need anything but the handheld to read or write tunes or do a driving scan. 2017+ owners can receive engine tunes through Autocal. Given that easier use in the vehicle and the lower pricepoint, it’s a popular option.
If you have a 2013-2015 ATS and already have a Diablosport device for tuning, I can provide Overkill tuning for Diablosport. Overkill tune files are provided through email which can then be uploaded to your Diablo device and flashed into your ATS just like the Diablo preloaded tunes. Purchase price will include several Overkill tunes plus tune revisions based on your driving scans. Keep in mind that Overkill cannot tune for bigger modifications like camshafts, superchargers etc but for basic bolt on modifications, no problem through Diablosport's custom tuning suite! Once purchased, you'll need to pull off the "backup" and "last tune written" files off of your Diablosport device's drive and email them to willoverkill@gmail.com.
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Autocal Handheld: The best way for us to provide tuning for your C/C pickup is through our Autocal handheld system. The Autocal handheld allows you to take the handheld to the vehicle, read the factory file, upload our Overkill tunes and provide scan data using just the handheld unit inside the vehicle. Return to stock calibration whenever you want, apply updates and retunes easily through email with us and Overkill retuning is available at no charge for as long as you own your vehicle. You'll need a computer that can run a windows based program and has a USB port to transfer files to and from the handheld. |
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Overkill is also a Diablosport custom tuner. Already have an Intune or Trinity from Diablosport? Upgrade it with Overkill tuning! You'll receive our Overkill tunes and tuning support for as long as you own the truck. Overkill tunes get loaded to the handheld and can be flashed just like the Diablo tune. 87 octane, 91/93 octane and E85 tuning all included in the purchase. |
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The only larger throttle body for the 2012+ LFX 3.6 is available here at Overkill for the 2015-16 Colorado/Canyons. The factory throttle body is 72mm. Our 80mm throttle body solution dwarfs the stock unit and bolts directly to your Colorado/Canyon intake manifold which already has a 79.5mm inlet to take full advantage of this larger throttle body! One of the best upgrades you can do beyond our tune, this throttle body setup will improve horsepower at a dyno tested 11+ wheel horsepower, improves throttle response (particularly with Overkill tuning) and changes the intake note of the V6 to a deeper growl at heavy throttle. Throttle body is a brand new unit, comes with an aluminum adapter plate, stainless steel bolts and some parts to assist installation. Tip: This throttle body has a 3.5" clamping area, compared to the factory throttle body of 3". Ensure you have a solution available before installing the throttle body! Requires no tuning but works even better with Overkill tuning (if you're an Overkill tune user, you get a no charge revision for your Autocal).   |